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math.CA2018★ 2 cited
Ultradiscrete limit of the spectral polynomial of the -Heun equation
Kentaro Kojima, Tsukasa Sato, Kouichi Takemura
It is known that the q-Heun equation has polynomial-type solutions in some special cases, and the condition for the accessory parameter E is described by the roots of the spectral…
math.CA2018★ 2 cited
Polynomial solutions of -Heun equation and ultradiscrete limit
Kentaro Kojima, Tsukasa Sato, Kouichi Takemura
We study polynomial-type solutions of the -Heun equation, which is related with quasi-exact solvability. The condition that the -Heun equation has a non-zero polynomial-type…